2005 Yamaha Kodiak 450 High Idle

[crkid]

2005 Kodiak 450

Have had this quad a little over a year now. Bought used with 700 miles. Always had a tiny high idle after being revved up and after about 15 seconds it would go down to normal idle.

Up until now we have completely cleaned the carb, all ports, jets, float and needle, new spark plug and have also adjusted the intake and exhaust valves. Intake was where it should be right within specs, exhaust was at the looser part of the spec so we tightened it up to the middle of the specs.

It runs a lot better after all that, but there is still a tiny little bit of high idle after being revved and the rpms fall back down, maybe 3 seconds if that. I took the spark plug out and it is basically white, like its burning a lean mixture, its not burning a nice golden brown color on the plug.

I would like to start with the fuel screw to try adjusting it a little to see if it would help, but I cant seem to find it. Could anyone give me some help of where its at and if its recessed in the carb a little?

Has anyone else had this problem? What do yall advise to do?

[Ajmboy]

Take a look at the diagram here: 2005 Yamaha YFM45FAT KODIAK 450 4WD Parts, 2005 Yamaha YFM45FAT KODIAK 450 4WD OEM Parts - BikeBandit.com

The adjustment is #39.

* Updated year, added manufacturer and issue to thread title.

[crkid]

Part 39 is the idle adjustment. The idle is set correctly, just having a tiny high idle problem after being revved. Im looking for the fuel adjustment screw.

[oxidized_black]

i uploaded the carb pics from the kodiak service manual in the picture area. photobucket isn't working for me.

hope this will help

[crkid]

oxidized_black, exactly what I needed! thanks very much.

[oxidized_black]

if you need a manual, it's here: www.yousendit.com

login: [email protected]

pass: romy1961

just login and look at the top of page, you'll see folders and click on that. should be bottom pdf file.

[crkid]

Thank you a lot! also, the pilot screw is under the bowl of the carb, but it is closer to the intake side which leads me to believe it is an air screw, but I know most 4 strokes have a fuel screw. Do you know which it is? just so I know which way to turn it.

[oxidized_black]

i'm really not sure cr, pm cheriah and she will tell you everything you need to know about carbs. i stay away from them as much as i can.